Cowboys & Aliens(2011)

In 1875, in a small village in New Mexico, America, an unknown stranger with a strange handcuff enters the town and warns all the residents of the village that a great danger threatens them, and that is the attack of space aliens. Soon aliens attack the village and now this unknown stranger is the only hope of the people. With the help of the sheriff and a group of armed men, he tries to protect his place of residence against the threat of extraterrestrials in any way possible...